Inhalation of high concentrations of vapor is harmful and may cause heart irregularities, unconsciousness. or death. Intentional misuse or deliberate inhalation may cause death without warning. Vapor reduces oxygen available for breathing and is heavier than air.Liquid Contact can cause frostbite.

Overexposure by inhalation may include nonspecific discomfort such as nausea,headache, or weakness; temporary nervous sysyem depression with anesthetic effects such as dizziness, headache, confusion, incoordination, and loss of consciousness; or with gross overexposure(>20%), possibly temporary alteration of the heart’s electrical activity with irregular pulse, palpitations, or inadequate circulation.Individuals with preexisting diseases of the central nervous or cardiovascular may have increased susceptibility to the toxcity of excessive exposures. Eye or skin contact with the liquid may cause frostbite.

Carcinogenicity Information

None of the components present in this material at concentrations equal to or greater than 0.1% are listed by IARC, NTP, OSHA or ACGIH as a carcinogen.

Containers may rupture under fire conditions. Decomposition may occur. Contact of welding or soldering torch flame with high concentrations of refrigerant can result in visible changes in the size and color of torch flames. This flame effect will only occur in concentrations of product well above the recommended exposure limit, therefore stop all work and ventilate to disperse refrigerant vapors from the work area before using any open flames. HFC-23 is not flammable in air at temperatures up to 100
deg. C (212 deg F) at atmospheric pressure. However, mixtures of HFC-23 with high concentrations of air at elevated pressure and/or temperature can become combustible
in the presence of an ignition source. HFC-23 can also become combustible in an oxygen enriched environment (oxygen concentrations greater than that in air). Whether a mixture containing HFC-23 and air, or HFC-23 in an oxygen enriched atmosphere becomes combustible depends on the inter-relationship of 1) the temperature 2) the pressure, and 3) the proportion of oxygen in the mixture. In general, HFC-23 should not be allowed to exist with air above atmospheric pressure or at high temperatures; or in an oxygen enriched environment. For example: HFC-23 should NOT be mixed with air under pressure for leak testing or other purposes.

Extinguishing Media

As appropriate for combustibles in area.

Fire Fighting Instructions

Use water spray or fog to cool containers. Self-contained breathing apparatus (SCBA) is required if cylinders rupture and contents are released under fire conditions. Water runoff should be contained and neutralized prior to release.

Ventilate area using forced ventilation, especially in low or enclosed places where heavy vapors might collect. Remove open flames. Use self-contained breathing apparatus (SCBA) for large spills or when a release occurs. Refex Fire Emergency Exposure.
Limits (FEEL) are established to facilitate the safe release of a fire extinguishant in to spaces normally occupied by people to extinguish a fire or prevent an explosion and specify airborne concentrations of a brief duration which should not result in permanent adverse health effects or interfere with escape. For more information on the applicability of FEEL’s, contact Refex. The Refex Fire Emergency Exposure Limit (FEEL) for this material is 20% v/v for up to 15 minutes with a one minute not-to-exceed ceiling of 23% v/v.

Storage
Valve protection caps and valve cutlet threaded plugs must remain in place unless container is secured with valve outlet piped to use point. Do NOT drag, slide or roll cylinders. Use a suitable hand truck for cylinder movement. Never attempt to lift cylinder by its cap. Use a pressure reducing regulator when connecting cylinder to lower pressure piping or systems. Do NOT heat cylinder. Use a check valve or trap in the discharge line to prevent hazardous back flow into the cylinder. Cylinders should be stored upright and firmly secured to prevent falling or being knocked over. Separate full containers from empty containers. Storage area temperatures should not exceed 125 deg F (52 deg C) and should be free of combustible materials. Avoid area where salt or other corrosive materials are present. Avoid excessive inventory and storage time. Use a first-in first-out system. Keep accurate inventory records.

EXPOSURE CONTROLS/PERSONAL PROTECTION

Engineering Controls
Normal ventilation for standard manufacturing procedures is generally adequate. Local exhaust should be used when large amounts are released. Mechanical ventilation should be used in low or enclosed places.

Personal Protective Equipment
Impervious gloves should be used when handling liquid. Chemical splash goggles should be worn when handling liquid. Under normal manufacturing conditions, no respiratory protection is required when using this product. Self-contained breathing apparatus (SCBA) is required if a large spill or release occurs.

Decomposition products are hazardous. This material can be decomposed by high temperatures (open flames, glowing metal surfaces, etc.) forming HF, COF2, or CO. These materials are toxic and irritating. Contact should be avoided. Polymerization will not occur.

TOXICOLOGICAL AND ECOLOGICAL INFORMATION
Animal Data
Inhalation 4 hour LC-50: > 663,000 ppm in rats HFC-23 is untested for skin and eye irritancy, and for animal sensitization. Effects from single high inhalation exposure include anesthetic effects, and nonspecific effects such as weight loss were observed at concentrations >22%.No cardiac sensitization was observed in dogs after breathing 800,000 ppm for periods of 5-10 minutes following epinephrine challenge. In another test, dogs exposed to up to 30% or up to 50% (with additional oxygen), had no positive responses. No cardiac sensitization occurred in baboons exposed by inhalation to,10%, 30%, 50%, 70% HFC-23 before or after an epinephrine challenge; There was dose-related decrease in heart rate and differences in respiratory rate during exposure. No animal tests are available to define the carcinogenic hazards of HFC-23.The maternal and developmental NOAEL was 50,000ppm. HFC-23 is not considered a unique developmental hazards of the conceptus. There was no developmental or reproductive effects. Tests have shown that HFC-23 does not produce genetic damage in bacterial or mammalian cell cultures. It has not produced genetic damage in tests on animals.